EP2066329B1 - Synthèse, utilisation et compositions de cyclobutylméthylamines - Google Patents

Synthèse, utilisation et compositions de cyclobutylméthylamines Download PDF

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EP2066329B1
EP2066329B1 EP07842630.1A EP07842630A EP2066329B1 EP 2066329 B1 EP2066329 B1 EP 2066329B1 EP 07842630 A EP07842630 A EP 07842630A EP 2066329 B1 EP2066329 B1 EP 2066329B1
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alkyl
compounds
substituted
hydrogen
compound
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EP2066329A4 (fr
EP2066329A2 (fr
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Laxminarayan Bhat
Seema Rani Bhat
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Reviva Pharmaceuticals Inc
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Reviva Pharmaceuticals Inc
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    • C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C229/06—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton
    • C07C229/10—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings
    • C07C229/14—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings to carbon atoms of carbon skeletons containing rings
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Definitions

  • the present invention relates to cycloalkylmethylamines, synthesis of cycloalkylmethylamines and methods of using cycloalkylmethylamines for the pharmacological treatment of obesity and obesity related co-morbid indications.
  • Obesity is a chronic disease that affects millions of people across the world especially in the developed countries. It is defined by excess body fat and is generally measured by calculating a person's BMI (body mass index). If a person's BMI is 30 or above, he or she considered to be obese. Obesity can cause a number of health problems either directly or indirectly, such as, for example, type 2 diabetes, coronary heart disease, high blood triglycerides, high blood pressure and stroke. Obesity also raises risk of certain types of cancer. Obese men are more likely than normal-weight peers to die from cancer of the colon, rectum, and prostate.
  • BMI body mass index
  • Obese women are more likely than non-obese women to die from cancer of the gallbladder, breast, uterus, cervix and ovaries. Death from some cancers may be more likely because obesity makes the cancers harder to detect in the early stages (for example, the initial small lump of breast cancer may not be felt in an obese woman). Recent studies show obesity increases the risk of Alzheimer's-type dementia. Other disease and health problems linked to obesity include: gallbladder disease, gallstones, osteoarthritis, gout or joint pain, sleep apnea, psychological and social problems.
  • Obesity is caused by multiple factors, the primary factor being genetics which is the one factor relating to obesity over which individuals have no control. Other important factors involved in obesity are: the mechanisms of fat storage; the balance between energy intake and energy expenditure; an individual's life style: eating habits and exercise; and psychological, cultural and socioeconomic influences. Despite the seeming inexorable progression of this disease, there have been limited advances in the pharmacotherapy of this condition. Drugs to treat obesity can be divided into three groups: those that reduce food intake or appetite suppressants; those that alter metabolism or block the absorption of fat; and those that increase thermogenesis.
  • thermogenic drug combination that has been tested is ephedrine and caffeine, but this treatment has not been approved by regulatory agencies.
  • the fat absorption blocker works in the gastrointestinal tract by blocking an enzyme that is needed to digest fat. Instead of being absorbed from the intestine, up to one-third of the fat that a person consumes is excreted in the stool. In addition, orlistat blocks the absorption of needed fat-soluble vitamins A, D, E, and K, as well as beta-carotene. This is one of the major limitations of this drug for the long term use in the treatment of obesity. Most commonly reported other side effects of orlistat are bloating, diarrhea and oily stools.
  • noradrenergic and serotonergic drugs belong to a family of 2-arylethylamines are currently available in the market for the treatment of obesity.
  • the noradrenergic agents such as phenylpropanolamine, (ACUTRIM®, DEXATRIM®), diethylpropion (TENUATE®), and phentermine (FASTIN®, IONAMIN®) are approved for the short-term treatment of obesity.
  • noradrenergic and serotonergic agent sibutramine (MERIDIA®) is the only drug currently approved for the long-term treatment of obesity in the appetite suppressant category.
  • Sibutramine has cyclobutanemethylamine backbone and it is this backbone mainly responsible for its unique pharmacological properties.
  • treatment of nausea, emesis, and related conditions For examples: treatment of nausea, emesis, and related conditions; cognitive dysfunctions; eating disorders; weight gain; irritable bowel syndrome; obsessive compulsive disorders; platelet adhesion; apnea, affective disorders such as attention deficit disorders, depression, and anxiety; male and female sexual function disorders; restless leg syndrome; osteoarthritis; substance abuse including nicotine and cocaine addiction; narcolepsy; pain such as neuropathic pain, diabetic neuropathy, and chronic pain; migraines; cerebral function disorders; chronic disorders such as premenstrual syndrome; and incontinence.
  • sibutramine has a number of therapeutic benefits because of its unique pharmacological properties.
  • sibutramine's therapeutic use for the treatment of obesity, and other diseases and disorders is currently not fully utilized because of certain limitations and adverse side effects associated with the drug.
  • the major adverse events reported, in some cases life threatening, include increase in blood pressure and the side effects derived from the drug-drug interactions, for example, serotonin syndrome. The majority of these adverse events are, to some extent, metabolism-based.
  • Sibutramine exerts its pharmacological actions predominantly via its secondary (M 1 ) and primary (M 2 ) amine metabolites.
  • Sibutramine is metabolized in the liver principally by the cytochrome P450 (3A4) isozymes, to desmethyl metabolites, M 1 and M 2 . These active metabolites are further metabolized by hydroxylation and conjugation to pharmacologically inactive metabolites, M 5 and M 6 . The elimination half-lives of therapeutically active primary and secondary metabolites M 1 and M 2 are 14 and 16 hours, respectively. It is evident from a number literature reports that cytochrome P450 mediated metabolism and the long half lives of active metabolites (M 1 and M 2 ) are to a great extent responsible for adverse events such as increased blood pressure and other side effects derived from drug-drug interactions of sibutramine.
  • An ideal drug in this class should have potent appetite suppressant activity, a proven effect on fat loss, be well tolerated during acute and chronic administration and have alleviated side effects when compared to sibutramine and phentermine.
  • the present invention is directed towards compositions of novel cycloalkylmethylamine analogs and the use of the compositions for the treatment of obesity and related co-morbid conditions.
  • the present invention provides methods for synthesizing such cycloalkylmethylamine analogs.
  • the present invention also provides methods for using cycloalkylmethylamine analogs, and pharmaceutical composition of cycloalkylmethylamine analogs for treating or preventing obesity and co-morbid diseases and/or disorders.
  • the compounds of the subject invention provide next generation noradrenergic and serotonergic active appetite suppressants, and are particularly effective and safe for the treatment of obesity and co-morbid diseases and/or disorders. They are advantageous because of their favorable metabolic, pharmacokinetics and pharmacological profiles. Specifically, these compounds are primarily metabolized by hydrolytic enzymes not by cytochrome P450 enzymes. These compounds have a highly predictable pharmacokinetic profile and are particularly advantageous because their metabolites have reduced systemic exposure in comparison to the active drug.
  • This invention provides compounds, pharmaceutical compositions and methods for pharmacological treatment of obesity and related co-morbid diseases and/or disorders.
  • This invention also provides methods for synthesis of novel appetite suppressants which are predominantly metabolized by hydrolytic enzymes.
  • novel appetite suppressants which are predominantly metabolized by hydrolytic enzymes.
  • Compounds of the invention refers to compounds encompassed by structural Formulae (IV) disclosed herein, and includes any specific compounds within these Formulae whose structure is disclosed herein.
  • the compounds of the invention may be identified either by their chemical structure and/or chemical name. When the chemical structure and chemical name conflict, the chemical structures is determinative of the identity of the compound.
  • the compounds of the invention may contain one or more chiral centers and/or double bonds and therefore, may exist as stereoisomers, such as double-bond isomers (i.e., geometric isomers), enantiomers or diastereoisomers.
  • the chemical structures depicted herein encompass all possible enantiomers and stereoisomers of the illustrated compounds including the stereoisomerically pure form (e.g., geometrically pure, enantiomerically pure or diastereomerically pure) and enantiomeric and stereoisomeric mixtures.
  • Enantiomeric and stereoisomeric mixtures can be resolved into their component enantiomers or stereoisomers using separation techniques or chiral synthesis techniques well known to the skilled artisan.
  • the compounds of the invention may also exist in several tautomeric forms including the enol form, the keto form and mixtures thereof. Accordingly, the chemical structures depicted herein encompass all possible tautomeric forms of the illustrated compounds.
  • the compounds of the invention also include isotopically labeled compounds where one or more atoms have an atomic mass different from the atomic mass of conventionally found in nature.
  • isotopes that may be incorporated into the compounds of the invention include, but are not limited to 2 H, 3 H, 13 C, 15 N, 18 O, 17 O, 31 P, 32 P, 35 S, 18 F and 36 Cl. Further, it should be understood, when partial structures of the compounds of the invention are illustrated, that brackets of dashes indicate the point of attachment of the partial structure to the rest of the molecule.
  • composition of the invention refers to at least one compound of the invention and a pharmaceutically acceptable vehicle, with which the compound is administered to a patient.
  • the compounds of the invention are administered is isolated form, which means separated from a synthetic organic reaction mixture.
  • Alkyl refers to a saturated or unsaturated, branched, straight-chain or cyclic monovalent hydrocarbon radical derived by the removal of one hydrogen atom from a single carbon atom of a parent alkane, alkene or alkyne.
  • Typical alkyl groups include, but are not limited to methyl; ethyls such as ethanyl, ethenyl, ethynyl; propyls such as propan-1-yl, propan-2yl, cyclopropan-1-yl, prop-1-en-1-yl, prop-1-en-2-yl, prop-2-en-1-yl (allyl), cycloprop-1-en-1yl, cycloprop-2-en-1yl, prop-1-yn-1-yl, prop-2-yn-1-yl, etc.; butyls such as butan-1-yl, butan-2-yl, 2-methyl-propan-1-yl, 2-methyl-propan-2-yl, cyclobutan-1-yl, but-1-en-1-yl, but-1-en-2-yl, 2-methyl-prop-1-en-1-yl, but-2-en-2-yl, buta-1, 3-dien-1
  • alkyl specifically intended to include radicals having any degree or level of saturation, i.e., groups having exclusively single carbon-carbon bonds, groups having one or more double carbon-carbon bonds, groups having one or more triple carbon-carbon bonds and groups having mixtures of single, double and triple carbon-carbon bonds.
  • alkanyl alkenyl
  • alkynyl alkynyl
  • an alkyl group comprises from 1-20 carbon atoms, more preferably, from 1 to 10 carbon atoms.
  • Alkanyl refers to a saturated branched, straight-chain or cyclic alkyl radical derived by the removal of one hydrogen atom from a single carbon atom of a parent alkane.
  • Typical alkanyl groups include but are not limited to , methanyl; ethanyl; propanyls such as propan-1-yl, propan-2-yl (isopropyl), cyclopropan-1-yl, etc.; butanyls such as butan-1-yl, butan-2-yl (sec-butyl), 2-methyl-propan-1-yl (isobutyl), 2-methyl-propan-2-yl (t-butyl), cyclobutan-1-yl, etc.; and the like.
  • Alkenyl refers to an unsaturated branched, straight-chain or cyclic alkyl radical having at least one carbon-carbon double bond derived by the removal of one hydrogen atom from a single carbon atom of a parent alkene.
  • the group may be in either the cis or trans conformation about the double bond(s).
  • Typical alkenyl groups include, but are not limited to, ethenyl; propenyls such as prop-1-en-1-yl, prop-1-en-2-yl, prop-2-en-1-yl (allyl), prop-2-en-2-yl, cycloprop-1-en-1-yl, cycloprop-2-en-1-yl; butenyls such as but-1-en-1-yl, but-1-en-2-yl, 2-methy-prop-1-en-1-yl, but-2-en-1-yl, but-2-en-2-yl, buta-1,3-dien-1-yl, buta-1,3-dien-2-yl, cyclobut-1-en-1-yl, cyclobut-1-en-3-yl, cyclobuta-1,3-dien-1-yl, etc.; and the like.
  • Alkynyl refers to an unsaturated branched, straight-chain or cyclic alkyl radical having at least one carbon-carbon triple bond derived by the removal of one hydrogen atom from a single carbon atom of a parent alkyne.
  • Typical alkynyl groups include, but are not limited to, ethynyl; propynyls such as prop-1-yn-1-yl, prop-2-yn-1-yl, etc.; butynyls such as but-1-yn-1-yl, but-1-yn-3-yl, but-3-yn-1-yl, etc.; and the like.
  • Acyl refers to a radical -C(O)R, where R is hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to formyl, acetyl, cyclohexylcarbonyl, cyclohexylmethylcarbonyl, benzoyl, benzylcarbonyl and the like.
  • Acyloxyalkyloxycarbonyl refers to a radical -C(O)OCR'R"OC(O)R''', where R', R", and R''' are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but not limited to - C(O)OCH 2 OC(O)CH 3 , -C(O)OCH 2 OC(O)CH 2 CH 3 , -C(O)OCH(CH 3 )OC(O)CH 2 CH 3 , - C(O)OCH(CH 3 )OC(O)C 6 H 5 and the like.
  • Acylalkyloxycarbonyl refers to a radical -C(O)OCR'R"C(O)R''', where R', R", and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but not limited to - C(O)OCH 2 C(O)CH 3 , -C(O)OCH 2 C(O)CH 2 CH 3 , -C(O)OCH(CH 3 )C(O)CH 2 CH 3 , - C(O)OCH(CH 3 )C(O)C 6 H 5 and the like.
  • Acyloxyalkyloxycarbonylamino refers to a radical - NRC(O)OCR'R"OC(O)R''', where R, R', R", and R''' are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but not limited to -NHC(O)OCH 2 OC(O)CH 3 , -NHC(O)OCH 2 OC(O)CH 2 CH 3 , - NHC(O)OCH(CH 3 )OC(O)CH 2 CH 3 , -NHC(O)OCH(CH 3 )OC(O)C 6 H 5 and the like.
  • Acylalkyloxycarbonylamino refers to a radical -NRC(O)OCR'R"C(O)R''', where R, R', R", and R'' are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but not limited to -NHC(O)OCH 2 C(O)CH 3 , -NHC(O)OCH 2 C(O)CH 2 CH 3 , - NHC(O)OCH(CH 3 )C(O)CH 2 CH 3 , -NHC(O)OCH(CH 3 )C(O)C 6 H 5 and the like.
  • Alkylamino means a radical -NHR where R represents an alkyl, or cycloalkyl group as defined herein that may be optionally substituted as defined herein. Representative examples include, but are not limited to, methylamino, ethylamino, 1-methylethylamino, cyclohexylamino and the like.
  • Alkoxy refers to a radical -OR where R represents an alkyl, or cycloalkyl group as defined herein that may be optionally substituted as defined herein. Representative examples include, but are not limited to methoxy, ethoxy, propoxy, butoxy, cyclohexyloxy and the like.
  • Alkoxycarbonyl refers to a radical -C(O)-alkoxy where alkoxy is as defined herein.
  • Alkoxycarbonylalkoxy refers to a radical -OCR'R''C(O)-alkoxy where alkoxy is as defined herein.
  • R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to -OCH 2 C(O)OCH 3 , -OCH 2 C(O)OCH 2 CH 3 , -OCH(CH 3 )C(O)OCH 2 CH 3 , -OCH(C 6 H)C(O)OCH 2 CH 3 , -OCH(CH 2 C 6 H 5 )C(O)OCH 2 CH 3 , -OC(CH 3 )(CH 3 )C(O)OCH 2 CH 3 , and the like.
  • Alkoxycarbonylalkylamino refers to a radical -NRCR'R"C(O)-alkoxy where alkoxy is as defined herein.
  • R, R', R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to -NHCH 2 C(O)OCH 3 , -N(CH 3 )CH 2 C(O)OCH 2 CH 3 ,-NHCH(CH 3 )C(O)OCH 2 CH 3 , -NHCH(C 6 H 5 )C(O)OCH 2 CH 3 , -NHCH(CH 2 C 6 H 5 )C(O)OCH 2 CH 3 , -NHC(CH 3 )(CH 3 )C(O)OCH 2 CH 3 , and the like.
  • Alkylsulfonyl refers to a radical -S(O) 2 R where R is an alkyl, or cycloalkyl group as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to, methylsulfonyl, ethylsulfonyl, propylsulfonyl, butylsulfonyl, and the like.
  • Alkylsulfinyl refers to a radical-S(O)R where R is an alkyl, or cycloalkyl group as defined herein that may be optionally substituted as defined herein. Representative examples include, but are not limited to, methylsulfinyl, ethylsulfinyl, propylsulfinyl, butylsulfinyl, and the like.
  • Alkylthio refers to a radical-SR where R is an alkyl or cycloalkyl group as defined herein that may be optionally substituted as defined herein. Representative examples include, but are not limited to methylthio, ethylthio, propylthio, butylthio, and the like.
  • Amide or Acylamino refers to a radical -NR'C(O)R", where R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to, formylamino acetylamino, cyclohexylcarbonylamino, cyclohexylmethylcarbonyl-amino, benzoylamino, benzylcarbonylamino and the like.
  • Amino refers to the radical -NH 2
  • Aryl refers to a monovalent aromatic hydrocarbon radical derived by the removal of one hydrogen atom from a single carbon atom of a parent aromatic ring system.
  • Typical aryl groups include, but are not limited to, groups derived from aceanthrylene, acenaphthylene, acephenanthrylene, anthracene, azulene, benzene, chrysene, coronene, fluoranthene, fluorine, hexacene, hexaphene, hexalene, as-indacene, s-indacene, indane, indene, naphthalene, octacene, octaphene, octalene, ovalene, penta-2,4-diene, pentacene, pentalene, pentaphene, perylene, phenalene, phenanthrene, picene, pleidene, pyr
  • Arylalkyl refers to an acyclic alkyl in which one of the hydrogen atoms bonded to a carbon atom, typically a terminal or sp 3 carbon atom, is replaced with an aryl group.
  • arylalkyl groups include, but not limited to, benzyl, 2-phenylethan-1-yl, 2-phenylethen-1-yl, naphthylmethyl, 2-naphthylethan-1-yl, 2-naphthylethene-1-yl, naphthobenzyl, 2-naphthophenylethan-1-yl and the like.
  • an arylalkyl group is (C 6 -C 30 )arylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety of the arylalkyl group is (C 1 -C 10 ) and the aryl moiety is (C 6 -C 20 ), more preferably, an arylalkyl group is (C 6 -C 20 ) arylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety of the arylalkyl group is (C 1 -C 8 ) and the aryl moiety is (C 6 -C 12 ).
  • Arylalkoxy refers to an -O-arylalkyl radical where arylalkyl is as defined herein that may be optionally substituted as defined herein.
  • Arylalkoxycarbonylalkoxy refers to a radical -OCR'R"C(O)-arylalkoxy where arylalkoxy is as defined herein.
  • R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to -OCH 2 C(O)OCH 2 C 6 H 5 , -OCH(CH 3 )C(O)O CH 2 C 6 H 5 , -OCH(C 6 H 5 )C(O)O CH 2 C 6 H 5 , -OCH(CH 2 C 6 H 5 )C(O)O CH 2 C 6 H 5 , -OC(CH 3 )(CH 3 )C(O)O CH 2 C 6 H 5 , and the like.
  • Arylalkoxycarbonylalkylamino refers to a radical -NRCR'R''C(O)-arylalkoxy where arylalkoxy is as defined herein.
  • R, R', R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to -NHCH 2 C(O)OCH 2 C 6 H 5 , -N(CH 3 )CH 2 C(O)OCH 2 C 6 H 5 , -NHCH(CH 3 )C(O)OCH 2 C 6 H 5 , -NHCH(C 6 H 5 )C(O)OCH 2 C 6 H 5 , -NHCH(CH 2 C 6 H 5 )C(O)OCH 2 C 6 H 5 , -NHC(CH 3 )(CH 3 )C(O)OCH 2 C 6 H 5 , and the like.
  • Aryloxycarbonyl refers to radical -C(O)-O-aryl where aryl is defined herein that may be optionally substituted as defined herein.
  • Aryloxycarbonylalkoxy refers to a radical -OCR'R"C(O)-aryloxy where aryloxy is as defined herein.
  • R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to -OCH 2 C(O)OC 6 H 5 , -OCH(CH 3 )C(O)OC 6 H 5 , -OCH(C 6 H 5 )C(O)OC 6 H 5 , -OCH(CH 2 C 6 H 5 )C(O)OC 6 H 5 , -OC(CH 3 )(CH 3 )C(O)OC 6 H 5 , and the like.
  • Aryloxycarbonylalkylamino refers to a radical -NRCR'R"C(O)-aryloxy where aryloxy is as defined herein.
  • R, R', R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to -NHCH 2 C(O)OC 6 H 5 , -N(CH 3 )CH 2 C(O)OC 6 H 5 , -NHCH(CH 3 )C(O)OC 6 H 5 , -NHCH(C 6 H 5 )C(O)OC 6 H 5 , -NHCH(CH 2 C 6 H 5 )C(O)OC 6 H 5 , -NHC(CH 3 )(CH 3 )C(O)OC 6 H 5 , and the like.
  • Carbamoyl refers to the radical -C(O)N(R) 2 where each R group is independently, hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • “Carbamate” refers to a radical -NR'C(O)OR", where R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to, methylcarbamate (-NHC(O)OCH 3 ), ethylcarbamate (-NHC(O)OCH 2 CH 3 ), benzylcarbamate (-NHC(O)OCH 2 C 6 H 5 ), and the like.
  • Carbonate refers to a radical -OC(O)OR, where R is alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Representative examples include, but are not limited to, methyl carbonate (-C(O)OCH 3 ), cyclohexyl carbonate (-C(O)OC 6 H 11 ), phenyl carbonate (-C(O)OC 6 H 5 ), benzyl carbonate (-C(O)OCH 2 C 6 H 5 ), and the like.
  • Carboxy means the radical -C(O)OH.
  • Cyano means the radical -CN.
  • Cycloalkyl refers to a substituted or unsubstituted cyclic alkyl radical. Where a specific level of saturation is intended, the nomenclature “cycloalkanyl” or “cycloalkenyl” is used. Typical cycloalkyl groups include, but are not limited to, groups derived from cyclopropane, cyclobutane, cyclopentane, cyclohexane, and the like. In a preferred embodiment, the cycloalkyl group is (C 3 -C 10 ) cycloalkyl, more preferably (C 3 -C 7 ) cycloalkyl.
  • Cycloheteroalkyl refers to a saturated or unsaturated cyclic alkyl radical in which one or more carbon atoms (and any associated hydrogen atoms) are independently replaced with the same or different heteroatom.
  • Typical heteroatoms to replace the carbon atom(s) include, but are not limited to, N, P, O, S, Si, etc. Where a specific level of saturation is intended, the nomenclature “cycloheteroalkanyl” or “cycloheteroalkenyl” is used.
  • Typical cycloheteroalkyl groups include, but are not limited to, groups derived from epoxides, imidazolidine, morpholine, piperazine, piperidine, pyrazolidine, pyrrolidine, quinuclidine, and the like.
  • Cycloheteroalkoxycarbonyl refers to a radical -C(O)-OR where R is cycloheteroalkyl as defined herein.
  • Dialkylamino means a radical -NRR' where R and R' independently represent an alkyl or cycloalkyl group as defined herein. Representative examples include, but are not limited to dimethylamino, methylethylamino, di-(1-methylethyl)amino, (cyclohexyl)(methyl)amino, (cyclohexyl)(ethyl)amino, (cyclohexyl)(propyl)amino, and the like.
  • “Derived from a drug” refers to a fragment that is structurally related to such a drug.
  • the structure of the fragment is identical to the drug except where a hydrogen atom attached to a heteroatom (N or O) has been replaced with a covalent bond to another group (typically, a promoiety).
  • a drug is a salt form of a carboxylic, phosphonic or phosphoric acid, the corresponding structural fragment derived from such a drug is considered to derived from the protonated acid form.
  • Drug refers to a compound that exhibits therapeutic and/or prophylactic and/or diagnostic utility when administered in effective amounts to a patient or a mammal.
  • Ester refers to a radical -C(O)OR, where R is alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, cycloheteroalkyl, substituted cycloheteroalkyl, aryl, substituted aryl, arylalkyl, substituted arylalkyl, heteroalkyl, substituted heteroalkyl, heteroaryl, substituted heteroaryl, heteroarylalkyl, substituted heteroarylalkyl as defined herein.
  • Representative examples include, but are not limited to, methyl ester (-C(O)OCH 3 ), cyclohexyl ester (-C(O)OC 6 H 11 ), phenyl ester (-C(O)OC 6 H 5 ), benzyl ester (-C(O)OCH 2 C 6 H 5 ), and the like.
  • Halo means fluoro, chloro, bromo, or iodo.
  • Heteroalkoxy means an -O-heteroalkyl radical where heteroalkyl is as defined herein.
  • Heteroalkyl, Heteroalkanyl, Heteroalkenyl, Heteroalkynyl refer to alkyl, alkanyl, alkenyl and alkynyl groups, respectively, in which one or more of the carbon atoms (and any associated hydrogen atoms) are each independently replaced with the same or different heteroatomic groups.
  • Heteroaryl refers to a monovalent heteroaromatic radical derived by the removal of one hydrogen atom from a single atom of a parent heteroaromatic ring system.
  • Typical heteroaryl groups include, but are not limited to, groups derived from acridine, arsindole, carbazole, carboline, chromane, chromene, cinnoline, furan, imidazole, indazole, indole, indoline, indolizine, isobenzofuran, isochromene, isoindole, isoindoline, isoquinoline, isothiazole, isoxazole, naphthyridine, oxadiazole, oxazole, perimidine, phenanthridine, phenanthroline, phenazine, phthalazine, pteridine, purine, pyran, pyrazine, pyrazole, pyridazine
  • the heteroaryl group is between 5-20 membered heteroaryl, with 5-10 membered heteroaryl being particularly preferred.
  • Preferred heteroaryl groups are those derived from thiophene, pyrrole, benzothiophene, benzofuran, indole, pyridine, quinoline, imidazole, oxazole and pyrazine.
  • Heteroaryloxycarbonyl refers to a radical -C(O)-OR where R is heteroaryl as defined.
  • Heteroarylalkyl refers to an acyclic alkyl radical in which one of the hydrogen atoms bonded to a carbon atom, typically a terminal or sp3 carbon atom, is replaced with a heteroaryl group. Where specific alkyl moieties are intended, the nomenclature heteroarylalkanyl, heteroarylalkenyl and/or heteroarylalkynyl is used.
  • the heteroarylalkyl radical is a 6-30 carbon membered heteroarylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety of the heteroarylalkyl is 1-10 membered and the heteroaryl moiety is a 5-20 membered heteroaryl, more preferably, a 6-20 membered heteroarylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety of the heteroarylalkyl is 1-8 membered and the heteroaryl moiety is a 5-12 membered heteroaryl.
  • Haldroxy means the radical -OH.
  • the term "patient” encompasses mammals and non-mammals.
  • mammals include, but are not limited to, any member of the Mammalian class: humans, non-human primates such as chimpanzees, and other apes and monkey species; farm animals such as cattle, horses, sheep, goats, swine; domestic animals such as rabbits, dogs, and cats; laboratory animals including rodents, such as rats, mice and guinea pigs, and the like.
  • non-mammals include, but are not limited to, birds, fish and the like. The term does not denote a particular age or gender.
  • “Pharmaceutically acceptable” means approved or approvable by a regulatory agency of the Federal or state government or listed in the U.S. Pharmacopoeia or other generally recognized pharmacopoeia for use in animals, and more particularly in humans.
  • “Pharmaceutically acceptable salt” refers to a salt of a compound of the invention, which is pharmaceutically acceptable and possesses the desired pharmacological activity of the parent compound.
  • Such salts include: (1) acid addition salts, formed with inorganic acids such as hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, and the like; or formed with organic acids such as acetic acid, propionic acid, hexanoic acid, cyclopentane propionic acid, glycolic acid, pyruvic acid, lactic acid, malonic acid, succinic acid, malic acid, maleic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, 3-(4-hydroxybenzoyl)benzoic acid, cinnamic acid, mandelic acid, methanesulfonic acid, ethanesulfonic acid, 1,2-ethanedisulfonic acid, 2-hydroxyethanesulfonic acid, benzene
  • “Pharmaceutically acceptable vehicle” refers to a diluent, adjuvant, excipient or carrier with which a compound of the invention is administered.
  • Phosphate refers to a radical -OP(O)(OR')(OR"), where R' and R" are each independently hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Preventing refers to a reduction in risk of acquiring a disease or disorder (i.e., causing at least one of the clinical symptoms of the disease not to develop in a patient that may be exposed to or predisposed to the disease but does not yet experience or display symptoms of the disease).
  • Prodrug refers to a derivative of a drug molecule that requires a transformation within the body to release the active drug. Prodrugs are frequently (though not necessarily) pharmacologically inactive until converted to the parent drug.
  • Promoiety refers to a form of protecting group that when used to mask a functional group within a drug molecule converts the drug into a prodrug. Typically, the promoiety will be attached to the drug via bond(s) that are cleaved by enzymatic or non-enzymatic means in vivo.
  • Protecting group refers to a group of atoms that when attached to a reactive group in a molecule masks, reduces or prevents that reactivity. Examples of protecting groups can be found in Green et al., “Protective Groups in Organic Chemistry", (Wiley, 2nd ed. 1991 ) and Harrison et al., “Compendium of Synthetic Organic Methods", vols. 1-8 (John Wiley and Sons, 1971-1996 ).
  • Representative amino protecting groups include, but are not limited to, formyl, acetyl, trifluoroacetyl, benzyl, benzyloxycarbonyl ("CBZ or Cbz"), tert-butoxycarbonyl (“Boc”), trimethylsilyl ("TMS”), 2-trimethylsilyl-ethanesulfonyl (“SES”), trityl and substituted trityl groups, allyloxycarbonyl, 9-fluorenylmethyloxycarbonyl (“FMOC”), nitroveratryloxycarbonyl (“NVOC”) and the like.
  • Representative hydroxyl protecting groups include, but are not limited to, those where the hydroxyl group is either acylated or alkylated such as benzyl, and trialkylsilyl ethers and allyl ethers.
  • Racemate refers to an equimolar mixture of enantiomers of a chiral molecule.
  • Spacer is an alkylene group.
  • Substituted refers to a group in which one or more hydrogen atoms are each independently replaced with the same or different substituents(s).
  • Sulfate refers to a radical -OS(O)(O)OR, where R is hydrogen, alkyl, cycloalkyl, cycloheteroalkyl, aryl, arylalkyl, heteroalkyl, heteroaryl, heteroarylalkyl, as defined herein that may be optionally substituted as defined herein.
  • Treating” or “Treatment” of any disease or disorder refers, in one embodiment, to ameliorating the disease or disorder (i.e., arresting or reducing the development of the disease or at least one of the clinical symptoms thereof). In another embodiment “treating” or “treatment” refers to ameliorating at least one physical parameter, which may not be discernible by the patient. In yet another embodiment, “treating” or “treatment” refers to inhibiting the disease or disorder, either physically (e.g., stabilization of a discernible symptom), physiologically, (e.g., stabilization of a physical parameter), or both. In yet another embodiment, “treating” or “treatment” refers to delaying the onset of the disease or disorder.
  • “Therapeutically effective amount” means the amount of a compound that, when administered to a patient for treating a disease, is sufficient to effect such treatment for the disease.
  • the “therapeutically effective amount” will vary depending on the compound, the disease and is severity and the age, weight, etc., of the patient to be treated, and can be determined by one of skill in the art without undue experimentation.
  • the invention provides compounds of structural Formula (IV),
  • the carbon with the * denotes a carbon capable of being optically active.
  • the compounds of the invention includes both R and S compounds, and mixture of both R and S compounds.
  • the subject invention provides compounds having any two or more of the above identified characteristics or properties.
  • Other embodiments provide for compounds having at least any three or more of the above identified properties or characteristics.
  • the compounds, and compositions thereof have any combination of four to eight of the above identified characteristics or properties.
  • the compounds of the invention have all eight characteristics or properties.
  • the primary metabolites of the inventive compounds regardless of the electrophysiological properties of the parent drug, have negligible inhibitory activity at the IKr (HERG) channel at normal therapeutic concentrations of the drug in plasma.
  • the concentration of the metabolite preferably is at least five times higher than the normal therapeutic concentration of the parent compound before activity at the IKr channel is observed.
  • the concentration of the metabolite is at least ten times higher than the normal therapeutic concentration of the parent compound before activity at the IKr channel is observed.
  • Compounds according to the invention are primarily metabolized by endogenous hydrolytic enzymes via hydrolysable bonds engineered into their structures.
  • the primary metabolites resulting from this metabolic pathway are water soluble and do not have, or show a reduced incidence of, DDI when administered with other medications (drugs).
  • Non-limiting examples of hydrolysable bonds that can be incorporated into compounds according to the invention include amide, ester, carbonate, phosphate, sulfate, urea, urethane, glycoside, or other bonds that can be cleaved by hydrolases.
  • analogs and salts of the exemplified compounds are within the scope of the subject invention.
  • skilled chemists can use known procedures to synthesize these compounds from available substrates.
  • analogs refers to compounds which are substantially the same as another compound but which may have been modified by, for example, adding additional side groups.
  • analogs as used in this application also may refer to compounds which are substantially the same as another compound but which have atomic or molecular substitution at certain locations in the compound.
  • the subject invention further pertains to enantiomerically isolated compounds, and compositions comprising the compounds.
  • the isolated enantiomeric forms of the compounds of the invention are substantially free from one another (i.e., in enantiomeric excess).
  • the "R” forms of the compounds are substantially free from the "S” forms of the compounds and are, thus, in enantiomeric excess of the "S” forms.
  • "S” forms of the compounds are substantially free of "R” forms of the compounds and are, thus, in enantiomeric excess of the "R” forms.
  • the isolated enantiomeric compounds are at least about in 80% enantiomeric excess. In a preferred embodiment, the compounds are in at least about 90% enantiomeric excess.
  • the compounds are in at least about 95% enantiomeric excess. In an even more preferred embodiment, the compounds are in at least about 97% enantiomeric excess. In a most preferred embodiment, the compounds are in at least 99% or greater than 99% enantiomeric excess.
  • the compounds of the invention can be obtained via the synthetic methods illustrated in Schemes 1-11.
  • a preferred synthetic route to the compounds of the invention will consist of attaching or incorporating soft-moieties to cycloalkylmethylamines of Formula (IV).
  • Several methods have been described in the art for the synthesis of cycloalkylmethylamine analogs (see, e.g. Mattson, R. J. et al. U.S. Pat. No. 5,596,019 ; Lulla, A. et al., International Application Publication No. WO 2004/096202 ; Senanayake, C. H. et al., International Application Publication No. WO 02/083631 ; Vyas, S.
  • the soft-moieties attached to spacers thereof are commercially available or can be prepared by established procedures (See e.g., Green et al., "Protective Groups in Organic Synthesis,”(Wiley , 4rd ed., 2006 ); Harrison et al "Compendium of Synthetic Organic Methods," vols.
  • the typical procedure involves the reaction of compound (3) with an appropriate Grignard reagent (R 11 MgBr) in presence of an appropriate solvent (e.g., ether, THF, toluene) at a temperature between 0 and 90 °C for 1 to 24 hours. Then the resulting adduct is subjected to reduction without any workup procedures using reducing agent like sodium borohydride according to a standard or an established procedure (see, Jeffery et al., J. Chem. Soc., Perkin Trans. 1, 1996, 2583-2589 ) to produce the corresponding cycloalkylmethylamine (6).
  • an appropriate solvent e.g., ether, THF, toluene
  • the amino group in compounds 6 can be alkylated directly using appropriate alkyl halides or sequentially by reductive alkylation methods using standard procedures well known in the art to provide compounds (10).
  • an appropriate carboxylic acid can be coupled to a compound (6) using standard peptide coupling reagents like DCC or DIC followed by reducing the corresponding amide (9) with using a reducing agent like borane under standard reduction conditions well known in the art.
  • Compound (10) can be further alkylated using appropriate alkyl halides in the presence of a suitable base (e.g., TEA, DIEA, pyridine, cesium carbonate) under standard conditions.
  • a suitable base e.g., TEA, DIEA, pyridine, cesium carbonate
  • Another general method for synthesis of compounds of Formula (IV) begins with an appropriate cycloalkylnitrile (3) in a stepwise fashion as illustrated in Scheme 4.
  • reaction of compound (3) with an appropriate Grignard reagent (25) carrying a masked aldehyde group followed by in situ reduction of the corresponding imine (26) using sodium borohydride as described above for the synthesis of compounds (6) and (17) in Scheme 1 and 3, respectively, affords the corresponding cycloalkylmethylamine (27).
  • a number of Grignard reagents having masked aldehyde functional group can be used in this reaction and most preferred ones are 5- and 6-member cyclic acetals.
  • cyclobutanealkylamines comprising Formula (IV) were prepared as described in Scheme 7.
  • An appropriate substituted phenylacetonitrile (47) was reacted with 1,3-dibromopropane (48) in anhydrous tetrahydrofuran at ice-bath temperature to room temperature to give the corresponding cycloalkylnitrile (49).
  • the cycloalkylnitrile compounds (49) were used for synthesizing compounds (52) using a tandem Grignard-reduction method as described in the general method for synthesis of cycloalkylmethylamines and illustrated in Scheme 1.
  • the amino group in compounds 52 was alkylated directly using appropriate alkyl halides carrying a terminal ester moiety using cesium carbonate in a polar aprotic solvent DMF at room temperature to 60 °C to afford the corresponding N-alkylated compounds 54.
  • the presence of tetrabutylammonium iodide in the reaction mixture was found to increase the yield of 54 and also accelerate the completion of the reaction to a great extent.
  • cycloalkylamines comprising Formula (IV) were prepared as described in Scheme 8.
  • the cycloalkylamine carrying a terminal carboxylic acid ester moiety 54a was prepared by reacting ethyl glyoxylate under reductive alkylation conditions using sodium triacetoxyborohydride as reducing agent.
  • the cycloalkylamine carrying a terminal carboxylic ester moiety 54e was prepared from the cycloalkylamine 52a in three steps as described in Scheme 8.
  • the compound 57 was prepared by reductive alkylation of 52a with benzaldehyde under standard conditions in good yield which was further alkylated with 5-bromovalerate using a strong base n-butyllithium (n-BuLi) to give the corresponding trialkyl compound 58.
  • the benzyl group in compound 58 was cleaved off under standard hydrogenolysis conditions using palladium on activated carbon in presence of hydrogen atmosphere and few drops of hydrochloric acid in ethyl acetate as solvent to give the corresponding amine 54e.
  • cyclobutanealkylamines comprising Formula (IV) were prepared as described in Scheme 10.
  • 4-Chlorophenylcyclobutaneacetonitrile (49a) was reacted with commercially available Grignard reagent having masked aldehyde functional group 63 as illustrated in Scheme 4 to give the corresponding cyclobutanealkylamines carrying masked aldehyde functional group 65.
  • the compounds 65 can be further derivatized to give cyclobutanealkylamines carrying esters and amides as illustrated in Scheme 4.
  • cycloalkylamines carrying terminal esters or amides comprising general Formulae (I) and (II) were prepared as described in Scheme 11.
  • the amine moiety in cyclobutanealkylamine 52d was protected with tert- butyloxycarbonyl (BOC) group to give N-BOC protected amine 66.
  • BOC tert- butyloxycarbonyl
  • the TBS protecting group on 66 was cleaved off under neutral conditions using aqueous DMSO at 50-90 °C to give 67.
  • N-BOC protected phenol 67 was alkylated with ethyl bromoacetate under standard alkylating conditions using cesium carbonate as base in anhydrous DMF to afford the compound 69 which after treatment with trifluoroacetic acid in DCM gave the corresponding cyclobutanealkylamine carrying terminal carboxylic acid ester substituents 70.
  • the present invention provides compounds for use in methods of treating and preventing obesity and associated co-morbid conditions.
  • co-morbid conditions associated with obesity means medical conditions known to those skilled in the art to be associated with obesity.
  • the term includes but not limited to the following: diabetes including non-insulin dependent diabetes mellitious, impaired glucose tolerance, hypertension, coronary thrombosis, stroke, depression, anxiety, psychoses (for example schizophrenia), tardive dyskinesia, drug addiction, drug abuse, cognitive disorders, Alzheimer's disease, cerebral ischaemia, obsessive-compulsive behavior, panic attacks, social phobias, eating disorders such as bulimia, anorexia, snacking and binge eating, lipid syndromes, hyperglycemia, hyperlipidemia, and stress in mammals particularly humans.
  • the compounds, compositions, and methods of the present invention can be used in the treatment or prevention of metabolic diseases and conditions arising therefrom, or for example non exercise activity thermogenesis and increased metabolic rate, sexual dysfunction, sleep apnoea, premenstrual syndrome, urinary incontinence including stress incontinence, hyperactivity disorders, hiatial hernia, and reflux esophagitis, pain, especially neuropathic pain, weight gain associated with drug treatment, chronic fatigue syndrome, osteoarthritis and gout, cancers associated with weight gain, menstrual dysfunction, gallstones, orthostatic hypotension and pulmonary hypertension.
  • metabolic diseases and conditions arising therefrom, or for example non exercise activity thermogenesis and increased metabolic rate, sexual dysfunction, sleep apnoea, premenstrual syndrome, urinary incontinence including stress incontinence, hyperactivity disorders, hiatial hernia, and reflux esophagitis, pain, especially neuropathic pain, weight gain associated with drug treatment, chronic fatigue syndrome, osteoarthritis and gout
  • the compounds, compositions, and methods of the present invention can be useful in preventing cardiovascular disease, and in reducing platelet adhesiveness, in aiding weight loss after pregnancy, reducing the craving to smoke and in aiding weight loss after smoking cessation.
  • the present invention can also be useful in lowering uric acid levels and lipid levels in mammals particularly humans.
  • a compound and/or a composition containing a compound of structural Formula (IV) is administered to a patient, preferably a human, suffering from obesity and associated with co-morbid diseases and/or disorders
  • the compounds and/or compositions of the invention are administered to a patient, preferably a human, as a preventive measure against various diseases or disorders.
  • the compounds and/or compositions containing compound(s) of structural Formula (IV) may be administered as a preventive measure to a patient having a predisposition for obesity and associated co-morbid diseases and/or disorders (see, Montana, J. G. International Application Publication No. WO 2004/058237 ; Lulla, A.
  • the compounds, and/or compositions containing compounds(s), of structural Formula (IV) can be advantageously used in human medicine. As previously described in Section 4.4 above, compounds and compositions containing compound(s) of structural Formula (IV) are useful for the treatment or prevention of obesity and associated co-morbid diseases and/or disorders.
  • compounds and/or compositions of the invention When used to treat or prevent the above disease or disorders compounds and/or compositions of the invention can be administered or applied singly, in combination with other agents.
  • the compounds and/or compositions of the invention can also be administered or applied singly, in combination with other pharmaceutically active agents, including other compounds and/or compositions of the invention.
  • the current invention provides methods of treatment and prophylaxis by administration to a patient of a therapeutically effective amount of a composition and/or compound of the invention.
  • the patient may be an animal, is more preferably a mammal, and most preferably a human.
  • the present compounds and/or compositions of the invention which comprise one or more compounds and/or compositions of the invention are preferably administered orally.
  • the compounds and/or compositions of the invention may also be administered by any other convenient route, for example, by infusion or bolus injection, by absorption through epithelial or mucocutaneous linings (e.g., oral mucosa, rectal and intestinal mucosa, etc.). Administration can be systemic or local.
  • Various delivery systems are known, (e.g., encapsulation in liposomes, microparticles, microcapsules, capsules, etc.) that can be used to administer a compound and/or composition of the invention.
  • Methods of administration include, but are not limited to, intradermal, intramuscular, intraperitoneal, intravenous, subcutaneous, intranasal, epidural, oral, sublingual, intranasal, intracerebral, intravabinal, transdermal, rectally, by inhalation, or topically, particularly to the ears, nose, eyes or skin.
  • the compounds and/or compositions of the invention can be delivered via sustained release systems, preferably oral sustained release systems.
  • a pump may be used (see, Langer, supra; Sefton, 1987, CRC Crit. Ref Biomed. Eng. 14:201 ; Saudek et al., 1989, N. Engl. J. Med. 321:574 ).
  • polymeric materials can be used (see “ Medical Applications of Controlled Release,” Langer and Wise (eds.), Wiley, New York (1984 ); Ranger and Peppas, 1983, J. Macromol. Sci. Rev. Macromol Chem. 23:61 ; see also Levy et al., 1985, Science 228:190 ; During et al., 1989, Ann. Neurol. 25:351 ; Howard et al, 1989, J. Neurosurg. 71:105 ).
  • polymeric materials are used for oral sustained release delivery.
  • Preferred polymers include sodium carboxymethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose and hydroxyethylcellulose (most preferred, hydroxypropylmethylcellulose).
  • Other preferred cellulose ethers have been described in the art ( Bamba et al., Int. J. Pharm., 1979, 2, 307 ).
  • enteric-coated preparations can be used for oral sustained release administration.
  • Preferred coating materials include polymers with a pH-dependent solubility (i.e., pH-controlled release), polymers with a slow or pH-dependent rate of swelling, dissolution or erosion (i.e., time controlled release), polymers that are degraded by enzymes (i.e., enzyme controlled release) and polymers that form firm layers that are destroyed by an increase in pressure (i.e., pressure-controlled release).
  • osmotic delivery systems are used for oral sustained release administration ( Verma et al., Drug Dev. Ind. Pharm., 2000, 26:695-708 ).
  • OROS® osmotic delivery systems sold by Alza Corporation of Mountain View, California are used for oral sustained release delivery devices (See for example, Theeuwes et al., U.S. Pat. No. 3,845,770 ; and Theeuwes et al, U.S. Pat. No. 3,916,899 ).
  • a controlled-release system can be placed in proximity of the target of the compounds and/or composition of the invention, thus requiring only a fraction of the systemic dose (See, e.g., Goodson, in "Medical Applications of Controlled Release,” supra, vol. 2, pp. 115-138 (1984 )).
  • Other controlled-release systems discussed in Langer, 1990, Science 249:1527-1533 may also be used.
  • the compounds, and/or compositions containing compound(s) of structural Formula (IV) of the invention may be cleaved either chemically and/or enzymatically.
  • One or more enzymes present in the stomach, intestinal lumen, intestinal tissue, blood, liver, brain or any other suitable tissue of a mammal may enzymatically cleave the compounds and/or compositions of the invention.
  • the present composition contain a therapeutically effective amount of one or more compounds of the invention, preferably in purified form, together with a suitable amount of a pharmaceutically acceptable vehicle, which so as to provide the form for proper administration to a patient.
  • a pharmaceutically acceptable vehicle which so as to provide the form for proper administration to a patient.
  • the compounds of the invention and pharmaceutically acceptable vehicles are preferably sterile.
  • Water is preferred vehicle when the compound of the invention is administered intravenously.
  • Saline solutions and aqueous dextrose and glycerol solutions can also be employed as liquid vehicles, particularly for injectable solutions.
  • Suitable pharmaceutical vehicles also include excipients such as starch, glucose, lactose, sucrose, gelatin, malt, rice, flour, chalk, silica gel, sodium stearate, glycerol monostearate, talc, sodium chloride, dried skim milk, glycerol, propylene, glycol, water, ethanol and the like.
  • excipients such as starch, glucose, lactose, sucrose, gelatin, malt, rice, flour, chalk, silica gel, sodium stearate, glycerol monostearate, talc, sodium chloride, dried skim milk, glycerol, propylene, glycol, water, ethanol and the like.
  • present agents or pH buffering agents.
  • auxiliary, stabilizing, thickening, lubricating and coloring agents may be used.
  • compositions comprising a compound of the invention may be manufactured by means of conventional mixing, dissolving, granulating, dragee-making levigating, and emulsifying, encapsulating, entrapping or lyophilizing process.
  • Pharmaceutical compositions may be formulated in conventional manner using one or more physiologically acceptable carriers, diluents, excipients or auxiliaries, which facilitate processing of compounds of the invention into preparations which can be used pharmaceutically. Proper formulation is dependent upon the route of administration chosen.
  • compositions can take the form of solutions, suspensions, emulsion, tablets, pills, pellets, and capsules, capsules containing liquids, powders, sustained-release formulations, suppositories, emulsions, aerosols, sprays, suspensions, or any other form suitable for use.
  • the pharmaceutically acceptable vehicle is a capsule (see e.g., Grosswald et al., U.S.Pat. No. 5,698,155 ).
  • suitable pharmaceutical vehicles have been described in the art (see Remington's Pharmaceutical Sciences, Philadelphia College of Pharmacy and Science, 17th Edition, 1985 ).
  • Preferred compositions of the invention are formulated for oral delivery, particularly for oral sustained release administration.
  • compositions for oral delivery may be in the form of tablets, lozenges, aqueous or oily suspensions, granules, powders, emulsions, capsules, syrups or elixirs, for example.
  • Orally administered compositions may contain one or more optionally agents, for example, sweetening agents such as fructose, aspartame or saccharin; flavoring agents such as peppermint, oil of wintergreen, or cherry coloring agents and preserving agents to provide a pharmaceutically palatable preparation.
  • sweetening agents such as fructose, aspartame or saccharin
  • flavoring agents such as peppermint, oil of wintergreen, or cherry coloring agents and preserving agents to provide a pharmaceutically palatable preparation.
  • the compositions may be coated to delay disintegration and absorption in the gastrointestinal tract, thereby providing a sustained action over an extended period of time.
  • Selectively permeable membranes surrounding an osmotically active driving compound are also suitable for orally administered compounds of the invention.
  • fluid from the environment surrounding the capsule is imbibed by the driving compound, which swells to displace the agent or agent composition through an aperture.
  • delivery platforms can provide an essentially zero order delivery profile as opposed to the spiked profiles of immediate release formulations.
  • a time delay material such as glycerol monostearate or glycerol stearate may also be used.
  • Oral compositions can include standard vehicles such as mannitol, lactose, starch, magnesium stearate, sodium saccharine, cellulose, magnesium carbonate, etc. Such vehicles are preferably of pharmaceutical grade.
  • suitable carriers, excipients or diluents include water , saline, alkyleneglycols (e.g., propylene glycol), polyalkylene glycols (e.g., polyethylene glycol) oils, alcohols, slightly acidic buffers between pH 4 and pH 6 (e.g., acetate, citrate, ascorbate at between about mM to about 50 mM) etc.
  • alkyleneglycols e.g., propylene glycol
  • polyalkylene glycols e.g., polyethylene glycol
  • slightly acidic buffers between pH 4 and pH 6 e.g., acetate, citrate, ascorbate at between about mM to about 50 mM
  • flavoring agents, preservatives, coloring agents, bile salts, acylcamitines and the like may be added.
  • compositions for administration via other routes may also be contemplated.
  • buccal administration the compositions may take the form of tablets, lozenzes, etc. formulated in conventional manner.
  • Liquid drug formulations suitable for use with nebulizers and liquid spray devices and EHD aerosol devices will typically include a compound of the invention with a pharmaceutically acceptable vehicle.
  • the pharmaceutically acceptable vehicle is a liquid such as alcohol, water, polyethylene glycol or a perfluorocarbon.
  • another material may be added to alter the aerosol properties of the solution or suspension of compounds of the invention.
  • this material is liquid such as alcohol, glycol, polyglycol or fatty acid.
  • a compound of the invention may also be formulated in rectal or vaginal compositions such as suppositories or retention enemas, e.g., containing conventional suppository bases such as cocoa, butter or other glycerides.
  • a compound of the invention may also be formulated as depot preparation.
  • Such long acting formulations may be administered by implantation (for example, subcutaneously or intramuscularly) or by intramuscular injection.
  • a compound of the invention may be formulated with suitable polymeric or hydrophobic materials (for example, as an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, for example, as a sparingly soluble salt.
  • a compound of the invention when it is acidic, it may be included in any of the above-described formulations as the free acid, a pharmaceutically acceptable salt, a solvate or hydrate.
  • Pharmaceutically acceptable salts substantially retain the activity of the free acid, may be prepared by reaction with bases and tend to be more soluble in aqueous and other protic solvents than the corresponding free acid form.
  • a compound of the invention, or compositions thereof, will generally be used in an amount effective to achieve the intended purpose.
  • the compounds of Formula (IV) and compositions containing a compound Formula (IV) are administered or applied in a therapeutically effective amount.
  • the amount of a compound of the invention that will be effective in the treatment of a particular disorder or condition disclosed herein will depend on the nature of the disorder or condition, and can be determined by standard clinical techniques known in the art as previously described. In addition, in vitro or in vivo assays may optionally be employed to help identify optimal dosage ranges.
  • the amount of a compound of the invention administered will, of course, is dependent on, among other factors, the subject being treated, and the weight of the subject, the severity of the affliction, the manner of administration and the judgment of the prescribing physician.
  • the dosage may be delivered in a pharmaceutical composition by a single administration, by multiple applications or controlled release.
  • the compounds of the invention are delivered by oral sustained release administration.
  • the compounds of the invention are administered twice per day (more preferably, once per day). Dosing may be repeated intermittently, may be provided alone or in combination with other drugs and may continue as long as required for effective treatment of the disease state or disorder.
  • the compounds and/or compositions containing compound(s), of structural Formula (IV) for the pharmacological treatment of obesity and related co-morbid indications may be administered in the range 0.1 mg to 500 mg preferably 1 mg to 100 mg per day given in one or more doses and more preferably 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 35 mg or 50 mg per day and most preferably 25 mg.
  • the compounds of the invention are preferably assayed in vitro and in vivo, for the desired therapeutic or prophylactic activity, prior to use in humans.
  • the compounds of the invention may also be demonstrated to be effective and safe using animal model systems.
  • the therapeutically effective dose of a compound of the invention described herein will provide therapeutic benefit without causing substantial toxicity.
  • Toxicity of compounds of the invention may be determined using standard pharmaceutical procedures and may be readily ascertained by the skilled artisan.
  • the dose ratio between toxic and therapeutic effect is the therapeutic index.
  • a compound of the invention will preferably exhibit particularly high therapeutic indices in treating disease and disorders.
  • the dosage of a compound of the inventions described herein will preferably be within a range of circulating concentrations that include an effective dose with little or no toxicity.
  • the compounds of the invention can be used in combination therapy with at least one other therapeutic agent.
  • the compound of the invention and the therapeutic agent can act additively or, more preferably, synergistically.
  • composition comprising a compound of the invention is administered concurrently with the administration of another therapeutic agent, which can be part of the same composition.
  • a composition comprising a compound of the invention is administered prior or subsequent to administration of another therapeutic agent.
  • the invention is further defined by reference to the following examples, which describe in detail preparation of compounds and compositions of the invention and assays for using compounds and compositions of the invention.
  • the phenylcyclobutanenitriles 49a-d were prepared according to the protocol reported by Butler and Polatz (J. Org. Chem. 1971, 36, 1308 ).
  • NaH sodium hydride
  • THF anhydrous tetrahydrofuran
  • 1,3-dibromopropane 11.10 g, 0.055 mole
  • appropriate benzylnitrile 47a-d 0.05 mole
  • the compound 52b was prepared from the intermediate 67 as described in the Step 2 of Example 11 (Scheme 11).
  • the compound 67 was treated with trifluroacetic acid in dichloromethane at room temperature for 8 hours as described in the procedure for synthesis of compound 70 in the Step 4 of Example 11 (Scheme 11).
  • the compound was isolated as light yellow color liquid in 73% yield.
  • the reaction mixture was diluted with ethyl acetate (50 mL), filtered through a CELITE® pad and washed the CELITE® pad with ethyl acetate (15 mL ⁇ 3).
  • the combined filtrate was washed with brine (50 mL), water (50 mL), dried over sodium sulfate (Na 2 SO 4 ) and evaporated.
  • the residue was purified by silica gel column chromatography technique using 0-50% gradient of ethyl acetate and hexane to give the corresponding amine 54 in good yield.
  • the cyclobutane amines 54a-e gave satisfactory 1 H NMR and/or mass spectral data.
  • the building block 47a was purchased from commercial source.
  • the monoamine transporters inhibitory activities of selected compounds are reported herein.
  • the compounds were evaluated at MDS Pharma services ( 22011 Drive SE, Bothell, WA 98021, USA) using well established radioligand binding assays protocols ( Galli, A. et al., J. Exp. Biol. 1995, 198, 2197-2212 ; Giros, B. et al., Trends Pharmcol. Sci. 1993, 14, 43-49 ; Gu, H. et al., J. Biol. Chem. 1994, 269(10), 7124-7130 ; Shearman, L. P. et al, Am. J. Physiol., 1998, 275(6 Pt 1), C1621-1629 ; Wolf, W.
  • the human recombinant transporter proteins dopamine (DAT), norepinephrine (NET) and serotonin (SERT) were selected for the in vitro assays.
  • the CHO-K1 cells expressed with human recombinant dopamine transporter (DAT) (MDS catalog 220320) was used for evaluating the dopamine transporter inhibitory activity.
  • MDCK cells expressed with human recombinant transporters norepinephrine (NET) MDS catalog no. 204410
  • SERT serotonin
  • IC50 values were determined by a non-linear, least squares regression analysis using MathIQTM (ID Business Solutions Ltd. UK).
  • Ki inhibition constants
  • Ki values were calculated using the equation of Cheng and Prusoff ( Cheng, Y., Prusoff, W. H., Biochem. Pharmacol. 1973, 22:3099-3108 ) using the observed IC 50 of the tested compound, the concentration of radioligand employed in the assay and the historical values for the K D of the ligand (obtained experimentally at MDS Pharma Services).
  • the Hill coefficient (n H ) defining the slope of the competitive binding curve, was calculated using MathIQTM.

Claims (13)

  1. Dérivé de cycloalkylméthylamine de formule structurale (IV) :
    Figure imgb0017
     ou sel pharmaceutiquement acceptable de celui-ci, dans lequel :
    n vaut 1 ;
    SP est un espaceur alkylène ;
    X est O, S ou NH ;
    R2 est l'hydrogène, l'alkyle, l'alkyle substitué, l'aryle, l'aryle substitué, l'arylalkyle ou l'arylalkyle substitué ;
    R4 est l'hydrogène, l'alkyle ou l'alkyle substitué ;
    R5 est l'hydrogène, l'alkyle, l'halogène, l'hydroxyle ou l'alcoxy ;
    R6 est l'hydrogène, l'alkyle, l'alkyle substitué, l'aryle, l'aryle substitué, l'arylalkyle, l'arylalkyle substitué, le cycloalkyle, le cycloalkyle substitué, le cyclohétéroalkyle, le cyclohétéroalkyle substitué, l'hétéroaryle, l'hétéroaryle substitué, l'hétéroarylalkyle ou l'hétéroarylalkyle substitué ; et
    R7 est l'hydrogène, l'alkyle, l'halogène, l'hydroxyle ou l'alcoxy,
    dans lequel l'alkyle représente un radical hydrocarboné monovalent ramifié, linéaire ou cyclique saturé ou insaturé.
  2. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel
    R2 est l'hydrogène, l'alkyle, l'aryle ou l'arylalkyle ;
    R4 est l'hydrogène ou l'alkyle ;
    R5 est l'hydrogène, l'alkyle, l'halogène, l'hydroxyle ou l'alcoxy ;
    R6 est l'hydrogène, l'alkyle, l'alkyle substitué, l'aryle, l'aryle substitué, l'arylalkyle ou l'arylalkyle substitué ; et
    R7 est l'hydrogène, l'alkyle, l'halogène, l'hydroxyle ou l'alcoxy.
  3. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel SP est le propylène ou le butylène.
  4. Composé selon la revendication 1, dans lequel X est O.
  5. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel X est NH.
  6. Composé selon la revendication 1, dans lequel R2 est l'éthyle, le n-propyle, l'isopropyle, le n-butyle, le s-butyle ou le t-butyle.
  7. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel R4 est H.
  8. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel R5 est l'hydroxyle, l'alcoxy ou l'halogène.
  9. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel R6 est l'alkyle ou l'alkyle substitué.
  10. Dérivé de cycloalkylméthylamine selon la revendication 1, dans lequel R7 est l'hydrogène, l'alcoxy ou l'halogène.
  11. Dérivé de cycloalkylméthylamine selon la revendication 1, qui est
    Figure imgb0018
    dans lequel n = 1, R5 est Cl et R6 est l'éthyle ; ou
    n = 3, R5 est Cl et R6 est l'éthyle, l'isopropyle, l'ixobutyle ou le benzyle ; ou
    n = 4, R5 est Cl et R6 est l'éthyle.
  12. Dérivé de cycloalkylméthylamine selon l'une quelconque des revendications 1 à 11, pour une utilisation dans le traitement de l'obésité.
  13. Dérivé de cycloalkylméthylamine selon l'une quelconque des revendications 1 à 11, pour une utilisation dans le traitement de la dépression.
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CA2663254A1 (fr) 2008-03-20
IL197528A (en) 2014-06-30
IL197528A0 (en) 2009-12-24
EP2066329A4 (fr) 2012-01-04
RU2009114171A (ru) 2010-10-20
US20110263888A1 (en) 2011-10-27
US9302981B2 (en) 2016-04-05
WO2008034142A3 (fr) 2008-10-02
ZA200902255B (en) 2010-10-27
US7989500B2 (en) 2011-08-02
AU2007296074B2 (en) 2012-07-12
MX2009002781A (es) 2009-03-30
US20110263704A1 (en) 2011-10-27
RU2462451C2 (ru) 2012-09-27
AU2007296074A1 (en) 2008-03-20
US20140194508A1 (en) 2014-07-10
US20080139663A1 (en) 2008-06-12
JP2014058543A (ja) 2014-04-03
EP2066329A2 (fr) 2009-06-10
BRPI0716952A2 (pt) 2013-10-29
US20110263877A1 (en) 2011-10-27
CN101626768A (zh) 2010-01-13
CN101626768B (zh) 2013-08-21
WO2008034142A2 (fr) 2008-03-20
US8445714B2 (en) 2013-05-21
CA2663254C (fr) 2016-04-19

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